var Flash = Base.extend({
},
{
    isIE: (navigator.appVersion.indexOf("MSIE") != -1) ? true : false,
    isWin: (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false,
    isOpera: (navigator.userAgent.indexOf("Opera") != -1) ? true : false,

    /**
     * Prepares flash embed code.
     */
    getPlayerEmbed: function( idPlayer, playerLocation, playerVars, width, height, flashParams )
    {
        var htmlVars = this.getFlashVars(playerVars);

        var defaultFlashParams =
        {
            allowScriptAccess: "always",
            quality:           "high",
            bgcolor:           "#ffffff",
            allowFullScreen:   "true",
            flashVars:         htmlVars,
            wmode:             "opaque"
        };
        flashParams = $.extend(defaultFlashParams, flashParams);
        if (flashParams.wmode == null)
        {
            delete flashParams.wmode;
        }

        var html = '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="' + width + '" height="' + height + '" id="' + idPlayer + '">'
                + '<param name="movie" value="' + playerLocation + '" />';

        for(var i in flashParams)
            html += '<param name="' + i + '" value="' + flashParams[i] + '" />';

        html += '<embed src="' + playerLocation  + '" width="' + width + '" height="' + height + '" name="' + idPlayer + '" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"';

        for (i in flashParams)
            html += i + '="' + flashParams[i] + '" ';

        html += '></embed></object>';

        return html;
    },

    /**
     * Prepares flash embed code by specified flash options.
     */
    getPlayerEmbedByOptions: function( objectId, flashOptions )
    {
        var movieLocation = flashOptions.getMovieLocation();
        var flashVars = flashOptions.getFlashVars();

        var width = flashOptions.getWidth();
        var height = flashOptions.getHeight();

        var wmode   = flashOptions.getWmode();
        var bgColor = flashOptions.getBgColor();

        return this.getPlayerEmbed( objectId, movieLocation, flashVars, width, height, {wmode: wmode, bgcolor: bgColor} );
    },

    /**
     * Combines flash vars string by vars array.
     */
    getFlashVars: function(playerVars)
    {
        var htmlVars = '';
        for (var i in playerVars)
            htmlVars += i + '=' + encodeURIComponent(playerVars[i]) + '&';
        htmlVars = htmlVars.substr(0, htmlVars.length - 1);

        return htmlVars;
    },

    /**
     * Prepares and inserts flash embed code into page.
     */
    insertFlashMovie: function( idObject, movieLocation, flashVars, width, height, flashParams )
    {
        document.write( this.getPlayerEmbed(idObject, movieLocation, flashVars, width, height, flashParams) );
    },

    /**
     * Returns flash object by its name.
     */
    getFlashApp: function( appName )
    {
        return document[appName];
    },

    // When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
    detectFlashVer: function (reqMajorVer, reqMinorVer, reqRevision)
    {
        versionStr = this.getSwfVer();
        if (versionStr == -1 ) {
            return false;
        } else if (versionStr != 0) {
            if(this.isIE && this.isWin && !this.isOpera) {
                // Given "WIN 2,0,0,11"
                tempArray         = versionStr.split(" ");  // ["WIN", "2,0,0,11"]
                tempString        = tempArray[1];           // "2,0,0,11"
                versionArray      = tempString.split(",");  // ['2', '0', '0', '11']
            } else {
                versionArray      = versionStr.split(".");
            }
            var versionMajor      = versionArray[0];
            var versionMinor      = versionArray[1];
            var versionRevision   = versionArray[2];

                // is the major.revision >= requested major.revision AND the minor version >= requested minor
            if (versionMajor > parseFloat(reqMajorVer)) {
                return true;
            } else if (versionMajor == parseFloat(reqMajorVer)) {
                if (versionMinor > parseFloat(reqMinorVer))
                    return true;
                else if (versionMinor == parseFloat(reqMinorVer)) {
                    if (versionRevision >= parseFloat(reqRevision))
                        return true;
                }
            }
            return false;
        }
    },

    // JavaScript helper required to detect Flash Player PlugIn version information
    getSwfVer: function (){
        // NS/Opera version >= 3 check for Flash plugin in plugin array
        var flashVer = -1;

        if (navigator.plugins != null && navigator.plugins.length > 0) {
            if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
                var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
                var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;
                var descArray = flashDescription.split(" ");
                var tempArrayMajor = descArray[2].split(".");
                var versionMajor = tempArrayMajor[0];
                var versionMinor = tempArrayMajor[1];
                var versionRevision = descArray[3];
                if (versionRevision == "") {
                    versionRevision = descArray[4];
                }
                if (versionRevision[0] == "d") {
                    versionRevision = versionRevision.substring(1);
                } else if (versionRevision[0] == "r") {
                    versionRevision = versionRevision.substring(1);
                    if (versionRevision.indexOf("d") > 0) {
                        versionRevision = versionRevision.substring(0, versionRevision.indexOf("d"));
                    }
                }
                var flashVer = versionMajor + "." + versionMinor + "." + versionRevision;
            }
        }
        // MSN/WebTV 2.6 supports Flash 4
        else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) flashVer = 4;
        // WebTV 2.5 supports Flash 3
        else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) flashVer = 3;
        // older WebTV supports Flash 2
        else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) flashVer = 2;
        else if ( this.isIE && this.isWin && !this.isOpera ) {
            flashVer = this.controlVersion();
        }

        return flashVer;
    },

    controlVersion: function ()
    {
        var version;
        var axo;
        var e;

        // NOTE : new ActiveXObject(strFoo) throws an exception if strFoo isn't in the registry

        try {
            // version will be set for 7.X or greater players
            axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
            version = axo.GetVariable("$version");
        } catch (e) {
        }

        if (!version)
        {
            try {
                // version will be set for 6.X players only
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");

                // installed player is some revision of 6.0
                // GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
                // so we have to be careful.

                // default to the first public version
                version = "WIN 6,0,21,0";

                // throws if AllowScripAccess does not exist (introduced in 6.0r47)
                axo.AllowScriptAccess = "always";

                // safe to call for 6.0r47 or greater
                version = axo.GetVariable("$version");

            } catch (e) {
            }
        }

        if (!version)
        {
            try {
                // version will be set for 4.X or 5.X player
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
                version = axo.GetVariable("$version");
            } catch (e) {
            }
        }

        if (!version)
        {
            try {
                // version will be set for 3.X player
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
                version = "WIN 3,0,18,0";
            } catch (e) {
            }
        }

        if (!version)
        {
            try {
                // version will be set for 2.X player
                axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
                version = "WIN 2,0,0,11";
            } catch (e) {
                version = -1;
            }
        }

        return version;
    }

});